Rockwell Automation 21G PowerFlex 750 Series Safe Torque Off - Manual (Page 23)

Rockwell Automation Publication 750-UM002F-EN-P - July 2013 23
Installation and Wiring Chapter 3
Option Module Installation
To install the Safe Torque Off option module:
1. Firmly press the module edge connector into the desired port.
2. Tighten the top and bottom retaining screws.
– Recommended torque = 0.45 N•m (4.0 lb•in)
– Recommended screwdriver = T15 Hexalobular
ATTENTION: Hazard of equipment damage exists if an option module is
installed or removed while the drive is powered. To avoid damaging the drive,
verify that the voltage on the bus capacitors has discharged before performing
any work on the drive.
Frames 1…7: Measure the DC bus voltage at the Power Terminal Block by
measuring between the +DC and -DC terminals, between the +DC terminal and
the chassis, and between the -DC terminal and the chassis. The voltage must be
zero for all three measurements.
Frames 8…10: Measure the DC bus voltage at the DC+ and DC- TESTPOINT
sockets on the front of the power module.
IMPORTANT The Safe Torque Off option module can be installed in any drive port.
However, when used in an Integrated Motion application, the module
must be installed in port 6.
IMPORTANT Do not over-tighten retaining screws.